Experimental Design and Statistical Power for Cluster Randomized Cost-Effectiveness Trials

Experimental Design and Statistical Power for Cluster Randomized Cost-Effectiveness Trials
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集群随机成本效益试验的实验设计和统计功效

DOI:
10.1080/19345747.2022.2142177
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发表时间:
2022
影响因子:
1.8
通讯作者:
Kelcey, Ben
Kelcey, Ben
中科院分区:
教育学3区
文献类型:
--
作者:
Li, Wei;Dong, Nianbo;Maynarad, Rebecca;Spybrook, Jessaca;Kelcey, Ben

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聚类随机试验(crt)通常用于评估教育干预措施,特别是其有效性。最近,人们更加重视利用这些试验来探索成本效益。然而,建立集群随机成本-效果试验(CRCETs)功效的方法是有限的。本研究开发了功率计算公式和统计软件,以帮助研究人员规划二级和三级ccet。我们举例说明了我们的公式和软件在crcet设计中的应用,并讨论了样本量、嵌套效应、协变量以及成本和有效性度量之间的协方差对成本-效果估计的统计能力的影响。
Cluster randomized trials (CRTs) are commonly used to evaluate educational interventions, particularly their effectiveness. Recently there has been greater emphasis on using these trials to explore cost-effectiveness. However, methods for establishing the power of cluster randomized cost-effectiveness trials (CRCETs) are limited. This study develops power computation formulas and statistical software to help researchers plan two- and three-level CRCETs. We illustrate the application of our formulas and software for the designs of CRCETs and discuss the influence of sample size, nesting effects, covariates, and the covariance between cost and effectiveness measures on the statistical power of cost-effectiveness estimates.
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